import Vue from 'vue'
import Router from 'vue-router'

Vue.use(Router)

/* Layout */
import Layout from '@/layout'
// 引入多个动态路由模块
import approvalsRouter from './modules/approvals'
import departmentsRouter from './modules/departments'
import employeesRouter from './modules/employees'
import permissionRouter from './modules/permission'
import attendancesRouter from './modules/attendances'
import salarysRouter from './modules/salarys'
import settingRouter from './modules/setting'
import socialRouter from './modules/social'

/**
 * Note: sub-menu only appear when route children.length >= 1
 * Detail see: https://panjiachen.github.io/vue-element-admin-site/guide/essentials/router-and-nav.html
 *
 * hidden: true                   if set true, item will not show in the sidebar(default is false)
 * alwaysShow: true               if set true, will always show the root menu
 *                                if not set alwaysShow, when item has more than one children route,
 *                                it will becomes nested mode, otherwise not show the root menu
 * redirect: noRedirect           if set noRedirect will no redirect in the breadcrumb
 * name:'router-name'             the name is used by <keep-alive> (must set!!!)
 * meta : {
    roles: ['admin','editor']    control the page roles (you can set multiple roles)
    title: 'title'               the name show in sidebar and breadcrumb (recommend set)
    icon: 'svg-name'/'el-icon-x' the icon show in the sidebar
    breadcrumb: false            if set false, the item will hidden in breadcrumb(default is true)
    activeMenu: '/example/list'  if set path, the sidebar will highlight the path you set
  }
 */
// 动态路由规则数组
// 登入的用户，身份不同，看见的路由页面不同，拥有的路由规则对象也不同
// 动态路由表，项目中不同的用户可以访问不同的功能
export const asyncRoutes = [
  // 左侧边导航，根据路由规上则数祖第一层对象来生成动态左侧的导航
  // 每一个页面，都要一一对应
  // 每个左侧导航都分别分开对应一次layout，页面挂载二级路由
  // {
  //   path: '/approvals',
  //   name: 'Approvals',
  //   component: () => import('@/views/approvals'),
  //   meta: { title: '审批' }
  // }//这样写不行，因为直接跳转到另一个新页面了，必须嵌套
  // 左侧导航会遍历一级对象，有几个一级对象，就会左侧就会生成几行，依赖路由页表，自动生成导航
  approvalsRouter,
  departmentsRouter,
  employeesRouter,
  permissionRouter,
  attendancesRouter,
  salarysRouter,
  settingRouter,
  socialRouter
]

/**
 * constantRoutes
 * a base page that does not have permission requirements
 * all roles can be accessed
 */
// 静态路由
export const constantRoutes = [
  {
    path: '/login',
    component: () => import('@/views/login/index'),
    hidden: true
  },

  {
    path: '/404',
    component: () => import('@/views/404'),
    hidden: true
  },

  {
    path: '/',
    component: Layout,
    redirect: '/dashboard', // 重定向浏览器地址变为/dashboard（地址改变会再次重新匹配路由规则数组）
    children: [{
      path: 'dashboard',
      name: 'Dashboard',
      component: () => import('@/views/dashboard/index'),
      meta: { title: '首页', icon: 'dashboard' }
    }

    ]
  },
  // 404 page must be placed at the end !!!
  { path: '*', redirect: '/404', hidden: true }
]

// 静态+动态
const createRouter = () => new Router({
  // mode: 'history', // require service support
  scrollBehavior: () => ({ y: 0 }),
  // 组合到一起组成路由表
  routes: [...constantRoutes, ...asyncRoutes]
})

const router = createRouter()

// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
export function resetRouter() {
  const newRouter = createRouter()
  router.matcher = newRouter.matcher // reset router
}

export default router
